Class 1Class 1 senators belong to the electoral cycle that has recently been contested in 2000, 2002 (special), 2006, 2012, and 2018. The next election will be in 2024.
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C
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Class 3Class 3 senators belong to the electoral cycle that has recently been contested in 2004, 2010, 2016, and 2022. The next election will be in 2028.
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#
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Senator
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Party
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Dates in office
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Electoral history
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T
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T
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Electoral history
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Dates in office
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Party
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Senator
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#
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1
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Thomas Hart Benton
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Democratic- Republican
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Aug 10, 1821 – Mar 3, 1851
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Elected in 1821.
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1
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17th
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1
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Elected in 1821.
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Aug 10, 1821 – Mar 3, 1831
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Democratic- Republican
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David Barton
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1
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18th
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Jacksonian
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19th
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2
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Re-elected in 1825.Lost re-election.
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National Republican
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Re-elected in 1827.
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2
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20th
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21st
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22nd
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3
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Elected in 1830.Died.
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Mar 4, 1831 – Jun 6, 1833
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Jacksonian
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Alexander Buckner
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2
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Re-elected in 1833.
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3
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23rd
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Jun 6, 1833 – Oct 25, 1833
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Vacant
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Appointed to continue Buckner's term.Elected to finish Buckner's term.
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Oct 25, 1833 – Oct 3, 1843
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Jacksonian
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Lewis F. Linn
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3
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24th
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Democratic
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25th
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4
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Re-elected in 1836.
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Democratic
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Re-elected in 1839.
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4
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26th
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27th
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28th
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5
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Re-elected in 1842.Died.
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Oct 3, 1843 – Oct 14, 1843
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Vacant
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Appointed to continue Linn's term.Elected to finish Linn's term.
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Oct 14, 1843 – Mar 3, 1855
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Democratic
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David Rice Atchison
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4
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Re-elected in 1845.Lost re-election.
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5
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29th
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30th
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31st
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6
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Re-elected in 1849.Lost re-election.
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2
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Henry S. Geyer
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Whig
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Mar 4, 1851 – Mar 3, 1857
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Elected in 1851.Retired.
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6
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32nd
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33rd
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34th
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7
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Failure to elect.
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Mar 4, 1855 – Jan 12, 1857
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Vacant
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Elected late in 1857.Retired or lost re-election.
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Jan 12, 1857 – Mar 3, 1861
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Democratic
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James S. Green
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5
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3
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Trusten Polk
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Democratic
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Mar 4, 1857 – Jan 10, 1862
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Elected in 1857.Expelled for supporting the Confederacy in the American Civil War.
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7
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35th
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36th
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37th
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8
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Mar 4, 1861 – Mar 17, 1861
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Vacant
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Elected late in 1861.Expelled for supporting the Confederacy in the American Civil War.
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Mar 17, 1861 – Jan 10, 1862
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Democratic
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Waldo Johnson
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6
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Vacant
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Jan 10, 1862 – Jan 17, 1862
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|
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Jan 10, 1862 – Jan 17, 1862
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Vacant
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4
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John B. Henderson
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Unconditional Union
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Jan 17, 1862 – Mar 3, 1869
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Appointed to finish Polk's term.
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Appointed to continue Johnson's term.Successor qualified.
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Jan 17, 1862 – Nov 13, 1863
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Unconditional Union
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Robert Wilson
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7
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Elected to the next term in 1863.Retired.
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8
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38th
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Elected to finish Johnson's term.Retired due to ill health.
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Nov 13, 1863 – Mar 3, 1867
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Unconditional Union
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B. Gratz Brown
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8
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Republican
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39th
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Republican
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40th
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9
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Elected in 1866 or 1867.Resigned to become Chief Justice of the U.S. Court of Claims.
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Mar 4, 1867 – Dec 19, 1870
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Republican
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Charles D. Drake
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9
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5
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Carl Schurz
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Republican
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Mar 4, 1869 – Mar 3, 1875
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Elected in 1868.Retired.
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9
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41st
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Liberal Republican
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Appointed to continue Drake's term.Retired when successor elected.
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Dec 19, 1870 – Jan 20, 1871
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Republican
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Daniel T. Jewett
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10
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42nd
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Elected to finish Drake's term.Lost re-election.
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Jan 20, 1871 – Mar 3, 1873
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Democratic
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Francis P. Blair
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11
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Republican
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43rd
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10
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Elected in 1872 or 1873.Died.
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Mar 4, 1873 – Sep 20, 1877
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Democratic
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Lewis V. Bogy
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12
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6
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Francis Cockrell
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Democratic
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Mar 4, 1875 – Mar 3, 1905
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Elected in 1874.
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10
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44th
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45th
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Sep 20, 1877 – Sep 29, 1877
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Vacant
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Appointed to continue Bogy's term.Retired.
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Sep 29, 1877 – Jan 26, 1879
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Democratic
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David H. Armstrong
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13
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Elected to finish Bogy's term.Retired.
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Jan 27, 1879 – Mar 3, 1879
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Democratic
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James Shields
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14
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46th
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11
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Elected in 1879.
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Mar 4, 1879 – Mar 3, 1903
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Democratic
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George G. Vest
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15
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Re-elected in 1881.
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11
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47th
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48th
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49th
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12
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Re-elected in 1885.
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Re-elected in 1887.[1]
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12
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50th
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51st
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52nd
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13
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Re-elected in 1891.
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Re-elected in 1893.[2]
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13
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53rd
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54th
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55th
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14
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Re-elected in 1897.Retired.
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Re-elected in 1899.[3] Lost re-election.[4]
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14
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56th
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57th
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58th
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15
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Elected in 1903.
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Mar 4, 1903 – Apr 14, 1918
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Democratic
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William J. Stone
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16
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Vacant
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Mar 4, 1905 – Mar 18, 1905
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15
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59th
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7
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William Warner
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Republican
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Mar 18, 1905 – Mar 3, 1911
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Elected late in 1905.Retired.
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60th
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61st
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16
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Re-elected in 1909.[5]
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8
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James A. Reed
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Democratic
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Mar 4, 1911 – Mar 3, 1929
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Elected in 1910.
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16
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62nd
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63rd
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64th
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17
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Re-elected in 1914.Died.
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Re-elected in 1916.
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17
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65th
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Apr 14, 1918 – Apr 30, 1918
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Vacant
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Appointed to continue Stone's term.Lost renomination to finish Stone's term.
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Apr 30, 1918 – Nov 5, 1918
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Democratic
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Xenophon P. Wilfley
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17
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Elected in 1918 to finish Stone's term.
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Nov 6, 1918 – May 16, 1925
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Republican
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Selden P. Spencer
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18
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66th
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67th
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18
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Re-elected in 1920.Died.
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Re-elected in 1922.Retired.
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18
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68th
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69th
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May 16, 1925 – May 25, 1925
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Vacant
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Appointed to continue Spencer's term.Lost elections to finish Spencer's term and to the next term.
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May 25, 1925 – Dec 5, 1926
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Republican
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George H. Williams
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19
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Elected to finish Spencer's term.
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Dec 6, 1926 – Feb 3, 1933
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Democratic
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Harry B. Hawes
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20
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70th
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19
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Also elected to the next term in 1926.Retired, then resigned early.
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9
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Roscoe C. Patterson
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Republican
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Mar 4, 1929 – Jan 3, 1935
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Elected in 1928.Lost re-election.
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19
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71st
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72nd
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Appointed to finish Hawes's term, having already been elected to the next term.
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Feb 3, 1933 – Jan 3, 1945
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Democratic
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Joel B. Clark
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21
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73rd
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20
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Elected in 1932.
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10
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Harry S. Truman
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Democratic
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Jan 3, 1935 – Jan 17, 1945
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Elected in 1934.
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20
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74th
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75th
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76th
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21
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Re-elected in 1938.Lost renomination.
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Re-elected in 1940.Resigned to become U.S. Vice President.
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21
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77th
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78th
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79th
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22
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Elected in 1944.Lost re-election.
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Jan 3, 1945 – Jan 3, 1951
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Republican
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Forrest C. Donnell
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22
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11
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Frank P. Briggs
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Democratic
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Jan 18, 1945 – Jan 3, 1947
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Appointed to finish Truman's term.Lost election to full term.
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12
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James P. Kem
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Republican
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Jan 3, 1947 – Jan 3, 1953
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Elected in 1946.Lost re-election.
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22
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80th
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81st
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82nd
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23
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Elected in 1950.
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Jan 3, 1951 – Sep 13, 1960
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Democratic
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Thomas Hennings
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23
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13
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Stuart Symington
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Democratic
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Jan 3, 1953 – Dec 27, 1976
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Elected in 1952.
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23
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83rd
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84th
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85th
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24
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Re-elected in 1956.Died.
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Elected in 1958.
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24
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86th
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Sep 13, 1960 – Sep 23, 1960
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Vacant
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Appointed to continue Henning's term.Elected to finish Henning's term.
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Sep 23, 1960 – Dec 27, 1968
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Democratic
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Edward V. Long
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24
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87th
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88th
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25
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Re-elected in 1962.Lost renomination, and resigned early.
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Elected in 1964.
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25
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89th
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90th
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Appointed to finish Long's term, having been elected to next term.
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Dec 28, 1968 – Jan 3, 1987
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Democratic
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Thomas Eagleton
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25
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91st
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26
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Elected in 1968.
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Elected in 1970.Retired, then resigned early to give successor preferential seniority.
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26
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92nd
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93rd
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94th
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27
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Re-elected in 1974.
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14
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John Danforth
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Republican
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Dec 27, 1976 – Jan 3, 1995
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Appointed to finish Symington's term, having already been elected to the next term.
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Elected in 1976.
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27
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95th
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96th
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97th
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28
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Re-elected in 1980.Retired.
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Re-elected in 1982.
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28
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98th
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99th
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100th
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29
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Elected in 1986.
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Jan 3, 1987 – Jan 3, 2011
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Republican
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Kit Bond
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26
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Re-elected in 1988.Retired.
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29
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101st
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102nd
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103rd
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30
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Re-elected in 1992.
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15
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John Ashcroft
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Republican
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Jan 3, 1995 – Jan 3, 2001
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Elected in 1994.Lost re-election.
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30
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104th
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105th
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106th
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31
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Re-elected in 1998.
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16
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Jean Carnahan
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Democratic
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Jan 3, 2001 – Nov 23, 2002
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Appointed to begin the term of her husband, Mel Carnahan (D), who was posthumously elected in 2000.Lost election to finish her husband's term.
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31
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107th
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17
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Jim Talent
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Republican
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Nov 23, 2002 – Jan 3, 2007
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Elected in 2002 to finish Mel Carnahan's term.Lost re-election.
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108th
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109th
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32
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Re-elected in 2004.Retired.
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18
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Claire McCaskill
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Democratic
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Jan 3, 2007 – Jan 3, 2019
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Elected in 2006.
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32
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110th
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111th
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112th
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33
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Elected in 2010.
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Jan 3, 2011 – Jan 3, 2023
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Republican
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Roy Blunt
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27
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Re-elected in 2012.Lost re-election.
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33
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113th
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114th
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115th
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34
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Re-elected in 2016.Retired.
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19
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Josh Hawley
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Republican
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Jan 3, 2019 – present
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Elected in 2018.
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34
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116th
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117th
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118th
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35
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Elected in 2022.
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Jan 3, 2023 – present
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Republican
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Eric Schmitt
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28
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To be determined in the 2024 election.
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35
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119th
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120th
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121st
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36
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To be determined in the 2028 election.
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#
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Senator
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Party
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Years in office
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Electoral history
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T
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C
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T
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Electoral history
|
Years in office
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Party
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Senator
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#
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Class 1
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Class 3
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